This bleaching process is called "kier bleaching", and is generally carried out in two stages with a sodium hypochlorite pre-bleach and a hydrogen peroxide after-bleach.
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bleaching kier 漂白桶
vaccum bleaching kier 真空漂白釜
kier bleaching
漂煮锅漂白
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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